From: Brian King Date: Tue, 13 Sep 2011 11:22:51 +0000 (+0000) Subject: hvcs: Ensure page aligned partner info buffer X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=ac07a4a57f7408922a0b3d4dcb87104fe8a3d8ca;p=~shefty%2Frdma-dev.git hvcs: Ensure page aligned partner info buffer The Power platform requires the partner info buffer to be page aligned otherwise it will fail the partner info hcall with H_PARAMETER. Switch from using kmalloc to allocate this buffer to __get_free_page to ensure page alignment. Signed-off-by: Brian King Signed-off-by: Benjamin Herrenschmidt --- diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c index 4c8b6654693..39291665eca 100644 --- a/drivers/tty/hvc/hvcs.c +++ b/drivers/tty/hvc/hvcs.c @@ -1532,7 +1532,7 @@ static int __devinit hvcs_initialize(void) goto register_fail; } - hvcs_pi_buff = kmalloc(PAGE_SIZE, GFP_KERNEL); + hvcs_pi_buff = (unsigned long *) __get_free_page(GFP_KERNEL); if (!hvcs_pi_buff) { rc = -ENOMEM; goto buff_alloc_fail; @@ -1548,7 +1548,7 @@ static int __devinit hvcs_initialize(void) return 0; kthread_fail: - kfree(hvcs_pi_buff); + free_page((unsigned long)hvcs_pi_buff); buff_alloc_fail: tty_unregister_driver(hvcs_tty_driver); register_fail: @@ -1597,7 +1597,7 @@ static void __exit hvcs_module_exit(void) kthread_stop(hvcs_task); spin_lock(&hvcs_pi_lock); - kfree(hvcs_pi_buff); + free_page((unsigned long)hvcs_pi_buff); hvcs_pi_buff = NULL; spin_unlock(&hvcs_pi_lock);